PureCaptcha
Copyright 2010 Robert "Unlogic" Olofsson
Licensed under the LGPLv3 license.

For more information visit:
http://www.unlogic.se/projects/purecaptcha 

The project is originally based on kaptcha which is lisenced
under the Apache License, Version 2.0. The original software
and related information is available at: 
http://code.google.com/p/kaptcha/

The Java Image Processing classes are provided by JH Labs
under the Apache License, Version 2.0. The original software
and related information is available at:
http://jhlabs.com/ip/filters/download.html

See license.txt for the LGPLv3 license.
See apache.license.txt for the Apache License, Version 2.0.